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Exploiting SQL Injection with Sqlmap

Published: 07 June 2021    Last Updated: 03 November 2022

We've previously posted about manually finding and exploiting SQL injection vulnerabilities. However one of the reasons SQL Injection is such a high risk vulnerability overall if due to the fact that exploitation can often be entirely automated. One tool for exploiting this vulnerability is sqlmap. From the point of view of security testers, SQL Injection can be time consuming to exploit, especially with slow extraction methods such as Time-based blind. However by automating exploitation can allow security testers to demonstrate the issue risk whilst freeing up time to check other areas of the assessment scope.


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SQL Injection: Filter Evasion with Sqlmap

Published: 07 June 2021    Last Updated: 03 November 2022

We've previously written about many different techniques for Finding and Exploiting SQL Injection vulnerabilities. However, there are often restrictions and interim technologies such as Web Application Firewalls that can prevent certain payloads from being used. In some instances filters can be bypassed through common encoding mechanisms, however often these will be ineffective and other methods much be used.


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SQL Injection Exploitation: Out-of-Band

Published: 26 January 2021    Last Updated: 03 November 2022

Out-of-band exploitation refers to exploits where the extracted information is received over a connection other than the one the payload was delivered over. It can be used to bypass defensive technologies as well as complicating the detection and response capability. SQL Injection can be exploited out-of-band through protocols such as DNS in order to extract database contents. This is particularly useful as an alternative to Time-based exploitation where it can allow for faster extraction. If you're new to this vulnerability, it's worth starting at SQL Injection basics first, before reading this article.

The idea behind out-of-band exploitation is fairly simple, instead of inferring content in the database through something like Boolean logic, you can request the target system transmit the information over protocols such as HTTP, SMB or DNS.


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